Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

Project ______is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

双向晶闸管的额定电流的定义与普通晶闸管不一样,双向晶闸管的额定电流是用电流有效值来表示的

双向晶闸管与普通晶闸管一样,额定电流也用通态电流平均值表示上述描述( )

The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to（）

I think you should end it ______ it is too late, or you will be sorry for it.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.

Never（）the lifeboat or lifecraft disengaging locks or hydrostatic release gears because it can cause them to fail to function.

Never（）the lifeboat or lifecraft disengaging hocks or hydrostatic release gears because it can cause them to fail to function.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。